ZA200401500B - A filter and a method for making a filter. - Google Patents
A filter and a method for making a filter. Download PDFInfo
- Publication number
- ZA200401500B ZA200401500B ZA200401500A ZA200401500A ZA200401500B ZA 200401500 B ZA200401500 B ZA 200401500B ZA 200401500 A ZA200401500 A ZA 200401500A ZA 200401500 A ZA200401500 A ZA 200401500A ZA 200401500 B ZA200401500 B ZA 200401500B
- Authority
- ZA
- South Africa
- Prior art keywords
- filter
- filter material
- layer
- matrix layer
- bonding agent
- Prior art date
Links
- 238000000034 method Methods 0.000 title claims description 50
- 239000000463 material Substances 0.000 claims description 110
- 239000000835 fiber Substances 0.000 claims description 104
- 239000011159 matrix material Substances 0.000 claims description 73
- 239000002245 particle Substances 0.000 claims description 65
- 239000000853 adhesive Substances 0.000 claims description 63
- 230000001070 adhesive effect Effects 0.000 claims description 63
- 239000007767 bonding agent Substances 0.000 claims description 51
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 29
- 238000001914 filtration Methods 0.000 claims description 19
- 238000001179 sorption measurement Methods 0.000 claims description 12
- -1 fuller’s earth Chemical compound 0.000 claims description 11
- YXFVVABEGXRONW-UHFFFAOYSA-N Toluene Chemical compound CC1=CC=CC=C1 YXFVVABEGXRONW-UHFFFAOYSA-N 0.000 claims description 9
- NIXOWILDQLNWCW-UHFFFAOYSA-M Acrylate Chemical compound [O-]C(=O)C=C NIXOWILDQLNWCW-UHFFFAOYSA-M 0.000 claims description 4
- 238000003466 welding Methods 0.000 claims description 4
- UXVMQQNJUSDDNG-UHFFFAOYSA-L Calcium chloride Chemical compound [Cl-].[Cl-].[Ca+2] UXVMQQNJUSDDNG-UHFFFAOYSA-L 0.000 claims description 3
- 235000008733 Citrus aurantifolia Nutrition 0.000 claims description 3
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 3
- CDBYLPFSWZWCQE-UHFFFAOYSA-L Sodium Carbonate Chemical compound [Na+].[Na+].[O-]C([O-])=O CDBYLPFSWZWCQE-UHFFFAOYSA-L 0.000 claims description 3
- 235000011941 Tilia x europaea Nutrition 0.000 claims description 3
- 229910021536 Zeolite Inorganic materials 0.000 claims description 3
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 claims description 3
- 239000001110 calcium chloride Substances 0.000 claims description 3
- 229910001628 calcium chloride Inorganic materials 0.000 claims description 3
- 230000003197 catalytic effect Effects 0.000 claims description 3
- 239000003795 chemical substances by application Substances 0.000 claims description 3
- HNPSIPDUKPIQMN-UHFFFAOYSA-N dioxosilane;oxo(oxoalumanyloxy)alumane Chemical compound O=[Si]=O.O=[Al]O[Al]=O HNPSIPDUKPIQMN-UHFFFAOYSA-N 0.000 claims description 3
- 239000004571 lime Substances 0.000 claims description 3
- 229910044991 metal oxide Inorganic materials 0.000 claims description 3
- 150000004706 metal oxides Chemical class 0.000 claims description 3
- IJDNQMDRQITEOD-UHFFFAOYSA-N n-butane Chemical compound CCCC IJDNQMDRQITEOD-UHFFFAOYSA-N 0.000 claims description 3
- 239000000741 silica gel Substances 0.000 claims description 3
- 229910002027 silica gel Inorganic materials 0.000 claims description 3
- 239000010457 zeolite Substances 0.000 claims description 3
- 239000002156 adsorbate Substances 0.000 description 45
- 238000004519 manufacturing process Methods 0.000 description 14
- 229910052799 carbon Inorganic materials 0.000 description 10
- 230000008569 process Effects 0.000 description 7
- 239000012943 hotmelt Substances 0.000 description 6
- 238000001125 extrusion Methods 0.000 description 5
- 230000007246 mechanism Effects 0.000 description 5
- 239000007921 spray Substances 0.000 description 5
- 238000005507 spraying Methods 0.000 description 5
- 239000000126 substance Substances 0.000 description 5
- 238000012360 testing method Methods 0.000 description 5
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 5
- 239000004743 Polypropylene Substances 0.000 description 4
- 230000004913 activation Effects 0.000 description 4
- 230000000052 comparative effect Effects 0.000 description 4
- 239000012530 fluid Substances 0.000 description 4
- 229920001155 polypropylene Polymers 0.000 description 4
- 239000003522 acrylic cement Substances 0.000 description 3
- 230000003213 activating effect Effects 0.000 description 3
- 238000004378 air conditioning Methods 0.000 description 3
- 229920001577 copolymer Polymers 0.000 description 3
- 238000013461 design Methods 0.000 description 3
- 238000009826 distribution Methods 0.000 description 3
- 239000003517 fume Substances 0.000 description 3
- 238000010438 heat treatment Methods 0.000 description 3
- 230000008774 maternal effect Effects 0.000 description 3
- 239000003595 mist Substances 0.000 description 3
- 230000004048 modification Effects 0.000 description 3
- 238000012986 modification Methods 0.000 description 3
- 239000013618 particulate matter Substances 0.000 description 3
- 229920000098 polyolefin Polymers 0.000 description 3
- 239000011148 porous material Substances 0.000 description 3
- 230000001681 protective effect Effects 0.000 description 3
- 239000002002 slurry Substances 0.000 description 3
- 239000002904 solvent Substances 0.000 description 3
- WSWCOQWTEOXDQX-MQQKCMAXSA-M (E,E)-sorbate Chemical compound C\C=C\C=C\C([O-])=O WSWCOQWTEOXDQX-MQQKCMAXSA-M 0.000 description 2
- 239000004821 Contact adhesive Substances 0.000 description 2
- 239000004820 Pressure-sensitive adhesive Substances 0.000 description 2
- 238000010521 absorption reaction Methods 0.000 description 2
- 230000003466 anti-cipated effect Effects 0.000 description 2
- 238000005452 bending Methods 0.000 description 2
- 238000004140 cleaning Methods 0.000 description 2
- 239000011248 coating agent Substances 0.000 description 2
- 238000000576 coating method Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000001035 drying Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000000605 extraction Methods 0.000 description 2
- 239000007789 gas Substances 0.000 description 2
- 239000003292 glue Substances 0.000 description 2
- 230000036541 health Effects 0.000 description 2
- 238000007641 inkjet printing Methods 0.000 description 2
- 238000005304 joining Methods 0.000 description 2
- 238000011068 loading method Methods 0.000 description 2
- 229910052751 metal Inorganic materials 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 238000005065 mining Methods 0.000 description 2
- 229920000728 polyester Polymers 0.000 description 2
- 229920000642 polymer Polymers 0.000 description 2
- 239000003380 propellant Substances 0.000 description 2
- 230000001105 regulatory effect Effects 0.000 description 2
- 238000002791 soaking Methods 0.000 description 2
- 239000007787 solid Substances 0.000 description 2
- 229940075554 sorbate Drugs 0.000 description 2
- VZGDMQKNWNREIO-UHFFFAOYSA-N tetrachloromethane Chemical compound ClC(Cl)(Cl)Cl VZGDMQKNWNREIO-UHFFFAOYSA-N 0.000 description 2
- 239000004753 textile Substances 0.000 description 2
- VXNZUUAINFGPBY-UHFFFAOYSA-N 1-Butene Chemical compound CCC=C VXNZUUAINFGPBY-UHFFFAOYSA-N 0.000 description 1
- UHOVQNZJYSORNB-UHFFFAOYSA-N Benzene Chemical compound C1=CC=CC=C1 UHOVQNZJYSORNB-UHFFFAOYSA-N 0.000 description 1
- 235000009854 Cucurbita moschata Nutrition 0.000 description 1
- 235000009852 Cucurbita pepo Nutrition 0.000 description 1
- 240000001980 Cucurbita pepo Species 0.000 description 1
- 241000196324 Embryophyta Species 0.000 description 1
- 239000004677 Nylon Substances 0.000 description 1
- 239000004793 Polystyrene Substances 0.000 description 1
- 239000002250 absorbent Substances 0.000 description 1
- 230000002745 absorbent Effects 0.000 description 1
- NIXOWILDQLNWCW-UHFFFAOYSA-N acrylic acid group Chemical group C(C=C)(=O)O NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 230000001154 acute effect Effects 0.000 description 1
- 239000003463 adsorbent Substances 0.000 description 1
- 238000007605 air drying Methods 0.000 description 1
- 238000003915 air pollution Methods 0.000 description 1
- 238000004887 air purification Methods 0.000 description 1
- 125000003118 aryl group Chemical group 0.000 description 1
- DALDUXIBIKGWTK-UHFFFAOYSA-N benzene;toluene Chemical compound C1=CC=CC=C1.CC1=CC=CC=C1 DALDUXIBIKGWTK-UHFFFAOYSA-N 0.000 description 1
- 238000003339 best practice Methods 0.000 description 1
- 239000011230 binding agent Substances 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 238000009960 carding Methods 0.000 description 1
- 230000015556 catabolic process Effects 0.000 description 1
- 235000019504 cigarettes Nutrition 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 238000006731 degradation reaction Methods 0.000 description 1
- 235000014113 dietary fatty acids Nutrition 0.000 description 1
- 239000006185 dispersion Substances 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 239000000194 fatty acid Substances 0.000 description 1
- 229930195729 fatty acid Natural products 0.000 description 1
- 150000004665 fatty acids Chemical class 0.000 description 1
- 239000011152 fibreglass Substances 0.000 description 1
- 239000013538 functional additive Substances 0.000 description 1
- 230000004927 fusion Effects 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 239000008187 granular material Substances 0.000 description 1
- 230000005802 health problem Effects 0.000 description 1
- 230000002779 inactivation Effects 0.000 description 1
- 238000003475 lamination Methods 0.000 description 1
- 229920000092 linear low density polyethylene Polymers 0.000 description 1
- 239000004707 linear low-density polyethylene Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 229920001778 nylon Polymers 0.000 description 1
- 239000003960 organic solvent Substances 0.000 description 1
- 230000035515 penetration Effects 0.000 description 1
- 229920000412 polyarylene Polymers 0.000 description 1
- 239000004417 polycarbonate Substances 0.000 description 1
- 229920000515 polycarbonate Polymers 0.000 description 1
- 229920000306 polymethylpentene Polymers 0.000 description 1
- 239000011116 polymethylpentene Substances 0.000 description 1
- 229920005606 polypropylene copolymer Polymers 0.000 description 1
- 229920002223 polystyrene Polymers 0.000 description 1
- 229920001343 polytetrafluoroethylene Polymers 0.000 description 1
- 239000004810 polytetrafluoroethylene Substances 0.000 description 1
- 239000004800 polyvinyl chloride Substances 0.000 description 1
- 229920000915 polyvinyl chloride Polymers 0.000 description 1
- 238000011045 prefiltration Methods 0.000 description 1
- 238000004886 process control Methods 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 239000000047 product Substances 0.000 description 1
- 238000005086 pumping Methods 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 150000003839 salts Chemical class 0.000 description 1
- 238000012216 screening Methods 0.000 description 1
- 239000000779 smoke Substances 0.000 description 1
- 235000020354 squash Nutrition 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- 239000013589 supplement Substances 0.000 description 1
- 229920002994 synthetic fiber Polymers 0.000 description 1
- 239000012209 synthetic fiber Substances 0.000 description 1
- 238000010998 test method Methods 0.000 description 1
- 238000011144 upstream manufacturing Methods 0.000 description 1
- 239000012942 water-based acrylic adhesive Substances 0.000 description 1
- 239000000080 wetting agent Substances 0.000 description 1
- 239000002023 wood Substances 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D39/00—Filtering material for liquid or gaseous fluids
- B01D39/14—Other self-supporting filtering material ; Other filtering material
- B01D39/16—Other self-supporting filtering material ; Other filtering material of organic material, e.g. synthetic fibres
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J20/00—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof
- B01J20/28—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof characterised by their form or physical properties
- B01J20/28014—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof characterised by their form or physical properties characterised by their form
- B01J20/28028—Particles immobilised within fibres or filaments
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D39/00—Filtering material for liquid or gaseous fluids
- B01D39/14—Other self-supporting filtering material ; Other filtering material
- B01D39/16—Other self-supporting filtering material ; Other filtering material of organic material, e.g. synthetic fibres
- B01D39/1607—Other self-supporting filtering material ; Other filtering material of organic material, e.g. synthetic fibres the material being fibrous
- B01D39/1623—Other self-supporting filtering material ; Other filtering material of organic material, e.g. synthetic fibres the material being fibrous of synthetic origin
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J20/00—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof
- B01J20/28—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof characterised by their form or physical properties
- B01J20/28002—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof characterised by their form or physical properties characterised by their physical properties
- B01J20/28004—Sorbent size or size distribution, e.g. particle size
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J20/00—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof
- B01J20/28—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof characterised by their form or physical properties
- B01J20/28054—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof characterised by their form or physical properties characterised by their surface properties or porosity
- B01J20/28057—Surface area, e.g. B.E.T specific surface area
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J20/00—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof
- B01J20/30—Processes for preparing, regenerating, or reactivating
- B01J20/32—Impregnating or coating ; Solid sorbent compositions obtained from processes involving impregnating or coating
- B01J20/3214—Impregnating or coating ; Solid sorbent compositions obtained from processes involving impregnating or coating characterised by the method for obtaining this coating or impregnating
- B01J20/3223—Impregnating or coating ; Solid sorbent compositions obtained from processes involving impregnating or coating characterised by the method for obtaining this coating or impregnating by means of an adhesive agent
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Analytical Chemistry (AREA)
- Organic Chemistry (AREA)
- Filtering Materials (AREA)
- Laminated Bodies (AREA)
- Catalysts (AREA)
- Adhesives Or Adhesive Processes (AREA)
- Electrostatic Separation (AREA)
- Filtering Of Dispersed Particles In Gases (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GBGB0118123.9A GB0118123D0 (en) | 2001-07-25 | 2001-07-25 | A filter and a method for making a filter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| ZA200401500B true ZA200401500B (en) | 2004-11-19 |
Family
ID=9919153
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| ZA200401500A ZA200401500B (en) | 2001-07-25 | 2004-02-24 | A filter and a method for making a filter. |
Country Status (7)
| Country | Link |
|---|---|
| EP (1) | EP1279435A1 (ja) |
| JP (1) | JP2005517516A (ja) |
| KR (1) | KR20040030847A (ja) |
| CA (1) | CA2453247A1 (ja) |
| GB (1) | GB0118123D0 (ja) |
| WO (1) | WO2003009933A1 (ja) |
| ZA (1) | ZA200401500B (ja) |
Families Citing this family (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20050211100A1 (en) * | 2004-03-23 | 2005-09-29 | Doughty David T | Shaped composite adsorbent material |
| US20070261706A1 (en) | 2004-12-15 | 2007-11-15 | Ashesh Banerjea | Cigarette with carbon on tow filter |
| DE102005037671B3 (de) * | 2005-08-05 | 2007-01-04 | Carl Freudenberg Kg | Verfahren zur Herstellung einer Flächenware aus Fasermaterial, insbesondere Vliesstoff |
| DE102005044504A1 (de) | 2005-09-16 | 2007-03-29 | BLüCHER GMBH | Mit wirkstoffhaltigen Mikrokapseln beaufschlagtes funktionelles Textilmaterial und seine Verwendung |
| DE602007013550D1 (de) * | 2006-02-13 | 2011-05-12 | Donaldson Co Inc | Filtergewebe, das feine fasern und reaktive, adsor |
| DE102006026788A1 (de) * | 2006-06-07 | 2007-12-13 | Mann + Hummel Gmbh | Verfahren zur Kaschierung von gasdurchlässigen Flächenwaren |
| US10111534B2 (en) | 2015-04-01 | 2018-10-30 | Milliken & Company | Mattress containing microencapsulated phase change material |
| US10960341B2 (en) | 2016-03-14 | 2021-03-30 | 3M Innovative Properties Company | Air filters comprising polymeric sorbents for aldehydes |
| BR112018068677A2 (pt) | 2016-03-14 | 2019-01-15 | 3M Innovative Properties Co | filtros de ar compreendendo sorventes poliméricos para gases reativos |
| JP6551798B2 (ja) * | 2016-09-28 | 2019-07-31 | パナソニックＩｐマネジメント株式会社 | 積層体 |
| WO2018191865A1 (en) | 2017-04-18 | 2018-10-25 | 3M Innovative Properties Company | Air filter media with post-pleat-deposited sorbent particles |
| WO2018229604A2 (en) | 2017-06-16 | 2018-12-20 | 3M Innovative Properties Company | Air filters comprising polymeric sorbents for aldehydes |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2077141B (en) * | 1980-04-12 | 1984-04-18 | Bondina Ltd | Adsorbent materials |
| DE3304349C3 (de) * | 1983-02-09 | 1995-10-26 | Bluecher Hubert | Flächenfilter und Verfahren zu seiner Herstellung |
| DE4034798C2 (de) * | 1990-11-02 | 1996-07-11 | Sandler Helmut Helsa Werke | Verfahren zur Herstellung eines Adsorptions-Flächenfilters |
| US5350443B2 (en) * | 1993-04-19 | 1999-08-10 | Von Hasso Bluecher | Filter sheet material for passenger cabins in motor vehicles |
| ES2131892T3 (es) * | 1996-07-01 | 1999-08-01 | Binzer Papierfab J | Procedimiento para la elaboracion de filtros de fibras. |
-
2001
- 2001-07-25 GB GBGB0118123.9A patent/GB0118123D0/en not_active Ceased
- 2001-08-30 EP EP01203272A patent/EP1279435A1/en not_active Withdrawn
-
2002
- 2002-07-09 WO PCT/US2002/022022 patent/WO2003009933A1/en active Application Filing
- 2002-07-09 JP JP2003515319A patent/JP2005517516A/ja active Pending
- 2002-07-09 KR KR10-2004-7001009A patent/KR20040030847A/ko not_active Application Discontinuation
- 2002-07-09 CA CA002453247A patent/CA2453247A1/en not_active Abandoned
-
2004
- 2004-02-24 ZA ZA200401500A patent/ZA200401500B/en unknown
Also Published As
| Publication number | Publication date |
|---|---|
| JP2005517516A (ja) | 2005-06-16 |
| EP1279435A1 (en) | 2003-01-29 |
| GB0118123D0 (en) | 2001-09-19 |
| WO2003009933A1 (en) | 2003-02-06 |
| KR20040030847A (ko) | 2004-04-09 |
| CA2453247A1 (en) | 2003-02-06 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US7063733B2 (en) | Filter member | |
| US5350443A (en) | Filter sheet material for passenger cabins in motor vehicles | |
| TWI598146B (zh) | 具有吸收粒子之空氣過濾器 | |
| TW541200B (en) | Filter element, process for producing it and filter using the element | |
| US20050132886A1 (en) | Air filter for removing particulate matter and volatile organic compounds | |
| KR20070107109A (ko) | 차량 객실부 공기 필터 장치 | |
| US20130101477A1 (en) | Non-woven electret fibrous webs and methods of making same | |
| EP1279435A1 (en) | A filter and a method for making a filter | |
| EP2931402B1 (en) | Non-woven electret fibrous webs and methods of making same | |
| CN110465134A (zh) | 一种新型的复合过滤材料及其制备方法 | |
| Mukhopadhyay | Composite nonwovens in filters: Applications | |
| EP0882485B1 (en) | Laminated deodorant filter medium and method of making the same | |
| JP3817057B2 (ja) | 脱臭濾材ユニット | |
| JPH11156124A (ja) | ハニカム状空気浄化フィルタ | |
| JP3946576B2 (ja) | カバー材、それを用いたガス除去用濾材およびガス除去ユニット | |
| WO1994020193A1 (en) | Gas purification system | |
| KR100246936B1 (ko) | 탈취기능의 자동차 실내용 복합 에어 필터 메디아 | |
| US9199189B1 (en) | Filter medium having ozone and odor removal properties | |
| JPH07250885A (ja) | 空気浄化フィルターエレメント | |
| JPH10180022A (ja) | フィルタおよびその製造方法 | |
| JP2003079715A (ja) | ガス除去用濾材及びその製造方法 | |
| JP3653404B2 (ja) | 脱臭濾材の製造方法 | |
| JP5243740B2 (ja) | フィルタエレメント、及びその製造方法 | |
| JP3773654B2 (ja) | エアーフィルター | |
| WO2005063359A1 (ja) | エアフィルター濾材およびフィルターユニット |